Home / 100,180.02-138,260.70-57,170.10

Finding the Fourth Proportional to 100,180.02, 138,260.70 and 57,170.10

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Solution

The fourth proportional to 100,180.02, 138,260.70 and 57,170.10 is: 78,901.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,180.02 : 138,260.70 = 57,170.10 : x
  2. Step 2: Convert to fraction form
    100,180.02/138,260.70 = 57,170.10/x
  3. Step 3: Cross multiply
    100,180.02x = 138,260.70 × 57,170.10
  4. Step 4: Simplify right side
    100,180.02x = 7,904,378,045.07
  5. Step 5: Solve for x
    x = 7,904,378,045.07/100,180.02
  6. Step 6: Final answer
    x = 78,901.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.